GENETIC DIVERSITY OF BULGARIAN PHASEOLUS VULGARIS L. BASED ON PHASEOLIN TYPE AND SEED-COAT COLOUR

F. Sarsu, N. Tomlekova, J.-P. Baudoin, Sv. Sofkova-Bobcheva

Abstract: Knowledge of genetic diversity enhances the efficiency of germplasm conservation and improvement. Previous studies, using phaseolin seed protein as a molecular marker, have revealed four groups (T, Ca, C and S) of Bulgarian common bean accessions (Phaseolus vulgaris L.). The present study examines seed-coat colour diversity of 292 P. vulgaris accessions and the relation between phaseolin type and seed-coat colour. A previous study focused on phaseolin type and the present study adds an analysis of seed-coat colours and patterns and their relationships. The results identify subgroups within the major Andean and Mesoamerican genetic groups. Seed-coat colour and pattern comparisons by accessions, complemented with biochemical data, increase the discriminating power of genetic diversity analyses.

Keywords: common bean; germplasm conservation; molecular marker; seed storage protein

Date published: 2017-08-29